Apps

A browser-based raster image editor in the spirit of Paint or GIMP — brush, eraser, fill, layers, and a canvas you can paste screenshots straight onto. No install, runs entirely in your browser.

Trim a video, convert MP4 to GIF, extract MP3 audio, or compress a clip — all in your browser. Powered by ffmpeg.wasm, no upload, no signup. Drop a video, drag the trim handles, pick a mode, hit process. Works on MP4, MOV, WebM, MKV, AVI.

Transcribe audio to text in your browser. Record from your microphone or drop an audio / video file and get a transcript with timestamps. OpenAI Whisper running locally as WebAssembly — no upload, no signup. Export as .txt, .srt, or .vtt subtitles.

Remove the background from any photo in your browser using an AI model. No upload, no signup, no watermark — your image never leaves the page. Export to transparent PNG, WebP, or a solid-colour composite. Powered by Hugging Face's transformers.js running WebAssembly ONNX.

Apply a text or image watermark to a photo. Configurable opacity, rotation, scale, position (corner / edge / centre / free-drag) and tiling. Export to PNG, JPEG, or WebP. Nothing leaves the browser.

Edit, validate, and explore JSON. Source / tree / schema views per document, multi-doc tabs, inline tree editing, JSON-Schema validation via Ajv, undo, expand-all, and download.

Side-by-side editor with live GitHub-flavored markdown preview, KaTeX math, Mermaid diagrams, syntax highlighting, multi-document tabs, outline, and export.

Edit binary files with a hex + ASCII grid, data inspector, find/goto, insert/overwrite, hashes, and export. Drag a file in or paste bytes to start.

A bundle of focused CSS tools — WCAG contrast checker, multi-layer box-shadow generator, linear / radial / conic gradient generator, clip-path generator, and cubic-bezier easing editor. Each outputs copy-paste CSS, runs entirely client-side.

Compare two pieces of text side-by-side or as a unified diff. Optional inline word / character granularity, ignore whitespace, ignore case. Modified lines get intraline highlights showing exactly which words changed. Download a unified-diff .patch file. Nothing leaves the page.

Decode JSON Web Tokens (JWT) and verify their signatures in your browser. Live decode of header, payload, and standard claims (iat, exp, nbf, …) with human-readable timestamps. Verify HS, RS, PS, ES, and EdDSA signatures via the Web Crypto API — nothing leaves the page.

Decode the structure of 21 file types — PNG, JPEG, GIF, WebP, BMP, ICO, TIFF, AVIF / HEIC / MP4 / MOV, WASM, ZIP, TAR, PDF, GZIP, BZIP2, XZ, WAV, MP3, FLAC, ELF, and PE. Click any field to jump into the Hex Editor at that offset.

A focused suite of client-side PDF utilities — Merge, Split, Compress, and PDF → Images. Drag-to-reorder merging, range / burst splitting, lossless or rasterised compression, and PNG / JPEG / WebP rendering at any DPI. No upload, no signup, no watermark.